Wine supplier in different vein (4)
I believe the answer is:
vine
'wine supplier' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'different vein' is the wordplay.
'different' indicates anagramming the letters (letters placed in a different order).
'vein' anagrammed gives 'VINE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for vine that I've seen before include "Climbing fruiting plant" , "Plant producing grapes" , "Grape plant" , "Climber - creeper" , "Climbing or trailing plant" .)